sweep optical square
平面扫描仪，扫描式光学直角头

• auxiliary exposure
• auxiliary initiating laser
• auxiliary line
• auxiliary line of sight
• auxiliary opics
• auxiliary reflector
• Auxiliary Telescope
• auxiliary unit
• auxiometer
• auxochrome
• Auxometer
• availability
• availability factor
• available accuracy
• Available Point
• available power
• avalanche
• avalanche action
• avalanche breakdown
• avalanche breakdown semiconductor laser
• avalanche gain
• avalanche injection laser
• Avalanche Multiplication
• avalanche noise
• Avalanche Photodiode